You should never have to link to an SEO.
Avoid SEOs that talk about the power of "free-for-all" links, link popularity schemes, or submitting your site to thousands of search engines. These are typically useless exercises that don't affect your ranking in the results of the major search engines -- at least, not in a way you would likely consider to be positive.

Quadrille recommends that if you do link your client site to yours, you should nofollow those links.

Marcia said she sees "nothing wrong with "consulting services" in the anchor text back."